Powered by GoogleTranslate

Occupational Safety and Health Administration OSHA

Inspection Detail

Accident Investigation Summary
Summary Nr: 202499471 Event: 05/18/2008Welder Is Killed In Tank Explosion
On May 18, 2008, Employee #1, the sole owner of a welding company, was installing piping on the top of a tank that had contained a mix of methanol, water, poultry fat, and sulfuric acid. The tank had been drained, but not flushed or cleaned. He and another worker had purged the tank with Argon prior to beginning any work. Employee #1 drilled a pilot hole in the top of the tank to take an air sample with a gad detector. After obtaining unsafe readings, they continued to purge the tank until they obtained a safe reading. Employee #1 then drilled a 3-inch hole in the top of the tank to accept a flange. While making the second tack weld to the flange, an explosion occurred, blowing off the top of the tank. Employee #1 was thrown approximately 16 ft to the concrete floor, and was killed. The other worker was transported to a hospital, where he was treated and released the same day.
Keywords: vapor, flammable liquid, flammable vapors, fire, welding, explosion, pipe, purging, sulfuric acid, tank
Inspection Degree Nature Occupation
1 312128176 Fatality Puncture Welders and cutters

Thank You for Visiting Our Website

You are exiting the Department of Labor's Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.